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Eleven Technology Companies Join RPX in First Five Months

SAN FRANCISCO - March 31, 2009 - RPX Corporation today announced that five more technology companies have joined the RPX Defensive Patent Aggregation service, bringing total customers to 11 since the service was introduced last November.

IBM, Cisco, and Seiko-Epson are today joined by, Panasonic, Philips, LG Electronics, Samsung, and TiVo
that have signed on with RPX to reduce patent assertion and litigation costs initiated by non-practicing entities (NPEs) - a rapidly growing problem worldwide that costs technology companies billions of dollars annually. NPEs acquire patents, as opposed to creating them through research and development, solely for the purpose of aggressive offensive licensing and litigation against operating companies.

"Technology companies need a counterbalance to NPE assertion and litigation that doesn’t break the bank," said John Amster, RPX co-CEO. "Our business model and reasonable fees are clearly resonating with operating companies around the world."

RPX acquires patent rights and provides them as a defensive patent aggregation for an annual fee that is typically a fraction of a single patent assertion defense. To date RPX has acquired more than $70 million in patent rights in the mobile, Internet search, telecommunications, consumer electronics and RFID markets, and is on track to acquire over $100 million in patent rights in its first year of operation

About RPX Corporation

RPX Corporation is the first defensive patent aggregator. RPX acquires patent rights and provides them as a defensive patent aggregation for an annual membership fee to reduce technology companies' patent risks and costs created by non-practicing entities (NPEs). The RPX Defensive Patent Aggregation does not require member involvement in acquisitions, and RPX will not enforce the patents it purchases. RPX management has been responsible for more than $2 billion in patent transactions. RPX is financed by Kleiner Perkins Caufield & Byers and Charles River Ventures.

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Media Contacts

Greg Spector
RPX Corporation
greg.spector@gmail.com
+1 415 717 4666

Dan Reidy
Reidy Communications
dan@reidycommunications.com
+1 415 497 3109

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